Rock-crusher.



w. T. RUTH. ROCK CRUSHER.

APPLICATION FILED APR. 7| 1915.

Patented C. 24, 1916.

2 SHEETS-SHEET 1 AWT/V563;

W. T. RUTH.

ROCK CRUSHER.

APPLlcATmN FILED APR. 1, 191s.

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WILLIAM T. RUTH, OF KENNET'I SQUARE, PENNSYLVANIA, ASSIGNOR TO AMERICAN ROAD MACHINERY COMPANY, INC., 0F KENNETT SQUARE, PENNSYLVANIA, A COR- IPORATION OF DELAWARE.

ROCK-CRUSI-IER.

Maasai.

Specification of Letters Patent.

Patented @et 2A, 199ML.

Application filed April 7, 1916. Serial No. 89,531.

To all whom t may concern Be it known that I, VILLIAM T. RUTH, a citizen of the United States, residing at Kennett Square, county of Chester,and State of Pennsylvania, have invented a new and useful Improvement in Rock-Crushers, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form a part of this specification.

In the operation of rock Crushers it frequently happens that a large or excessively hard lump or mass of material becomes wedged between the jaws of the crusher in such a way as to resist crushing and lock the jaws from movement and throw the crusher out of operation. It then becomes necessary to dig out the mass of material lodged between the jaws and sometimes to use explosives to blast out'the material or destroy the toggle connecting the movable jaw and its actuating tumbler. Thus there is caused serious loss of time and often damage to the Crusher. i

i rlhe object of my invention is to provide means to dislodge or eject the material wedged between the jaws by so constructing the crusher that the distance between the jaws may be automatically increased beyond its maximum during normal operation of the machine, thereby allowing the material wedged between the jaws to drop'out. .In the specific embodiment of my invention herein set forth, this result is accomplished by giving to the tumbler, in addition to its ordinary movement of oscillation, an additional retractive movement, whereby the strut or toggle connectiig the tumbler and movable jaw will become detached, allowing the movable jaw to swing away from the fixed jaw to such an extent as to permit the entire contents of the jaw pocket to drop out. rl`his embodiment of the invention also comprises means to hold the movable jaw stationary during this special retractive movement of the tumbler, so as to prevent the movable jaw following the tumbler in its said. retractive movement, thereby insuring the release of the toggle.

In the drawings, which show this preferred specific embodiment of my invention Figure 1 is a vertical transverse section through the Crusher. Fig. 2 is a detail view of the movable jaw-holding contrivance. Fig. 3 is a section on the line 3-3 of Fig. 1,

with certain parts omitted. Fig. 4 is a front view of the crusher looking in the direction of the arrow 4, Fig. l.

The main elements of the crusher shown in the drawings are old and well known, and will be described in a general way but not in precise detail. Between the side plates a is secureda fixed jaw Z) faced with a hardened die c. The side plates a carry bearings for the shaft CZ from which is suspended the pendent swinging jaw e faced with a hardened die f. The side plates also carry bearings for the shaft from which is suspended, in the manner hereinafter described, the tumbler lever It. Opposite faces of the movable jaw and tumbler lever are recessed to` receive toggle seats j and y" between which is held, by the weight of the movable jaw e the strut or toggle i. On the main shaft 7c, which also extends between the side plates, are the flywheel Z and the cams m, which, through the medium of the roller n, actuates the tumbler h. o are the tension rods, which operate to assist the normal opening movement of the movable jaw, insuring that it shall follow the tumbler lever in the back stroke of its oscillating movement. These rods are, at their forward ends, attached to ears 79 at opposite ends of the movable jaw.

The above construction, which, as above stated, is old and well known, is modified by me, to accomplish the results heieinbefore set out, in. the following manner. Within the circular bearing face of the tumbler lever h is a sleeve (l` within which is an eccentrically mounted shaft r. which may be seen best in Fig. 3. Secured to the outer end of this shaft is an arm s, which is normally in the full line position shown in Fig. 3. its free end being orificed to receive a pin t which passes also through a hole in a bracket u secured to one of the side plates.

Thus the eccentric is normally held stationH ary, so that, in the normal operation of the Crusher, the tumbler lever is given the usual simple movement of oscillation on a fixed axis.l I also provide the following connection, normally not in use, between the two jaws; its purpose beinghereinafter described. rlwo hooked rods v, one of which is shown in Fig. 2, pass through between. ears fw under opposite ends of the fixed jaw,

the hooked ends entering orifices in the ears p. The end of each rod is threaded to liti . tumbler lever vertical line and openf the poelret receive a nut which, when tightened against the rear of' the correspondingear w, holds the two jaws in fixed relation. Assume that some nncrushable lump or mass becomes wedged between the jaws soas to shown in Fig. l tothe dotted line position,

thereby Aturning the eccentric shaft and retraeting the pivoted'end yof the tumbler lever it. 'This permits the toggle c' to drop out from between ther` tumbler lever and the n'tiovablejaw. The rods /v are then removed, allowing the movable jaw to swing away fro'mf'the iixed jaw lfar` enough to allow all the material contained between the jaws to dropout. v j Y p Y To lrestore lthe crusher to operative position, t 'ejlowerV end of the movable jaw is swung t ward the fixed jaw, the rods vare replaced, t'he'toggle z' is heldy by hand its normal position, land thearm sv isswnng into its full time, position, causing the pivoted end of the L to move toward the movable jaw' to the extent required to hold Ythe toggle zf'betyveen `the grooves in the toggle seatsy' and j. The 'rods o are then againremoved and thecrusher is restoredto operative position. This mode of removing the contents of the crusher pocket is not only highly expeditious, but is attendedA with no danger whatever to any of the machine parts.v

IjIax'fing now fully described my invention, .what I claim and desire to protect by Letters Patent is: t

1. vIn a rock crusher, the combination with the two jaws, of actuatingrme'chanism adapted to impart to one of the jaws a reciprocatmovement, and meansfto disrupt the operative connection between the driving mechanism andthe reciprocating jawrto allow the lat er toswing away from the fixed jaw and permit the material between the jaws todrop out. c t t a lrock Crusher, the combination vwith the ytwo...jalifvs, one ofwhich is vadapted to swing back andforth toward lthe other jaw, 'actu ting mechanisinadapted to so osciYl/lte the'i `w Ebetweehps'itons inclined at! differ- ,angles tovandjon one side of, ave tica-l ,ep kseing ,tl ough its axislof' oscllltion, d means' tor disrupt ,the operative connec- .j i' ,.,Y

nl between the driving mechanism and the latingijawto allow the latter to drop tion between the driving mechanism and the reciprocating jaw, thereby permitting the latter, when said holding means is rendered inoperative, to swing away from the fixed jaw..

4. In a rock Crusher, the combination with the fixed jaw and a pendent jaw adapted to swing, of actuating mechanism adapted to oscillate the pendent jaw between positions inclined at different angles to, and on one side of, a vertical line passing through its pivot, normally inoperative means adapted to be applied to hold ythe pendent jaw, independent of the actuating mechanism, from dropping l'toward a vertical position, and means to disrupt the operative connection between the driving mechanism and the pendent jaw, thereby permitting the pendent jaw to swing toward a vertical position when said holding means isrendered inoperative.

5. In a rock'crusher, the combination with two jaws, of a ,driving shaft, a chain of elements between the driving' shaft and one of said jaws adapted normally to vswing such jaw toward and from the other jaw, and means to remove one of said elements of the chain of actuatingl mechanism, thereby allowing the swinging to move an abnormal distance from the other and thus permit the discharge or removal of material wedged between the jaws. l j 6. In a rock Crusher, the combination with two jaws, of a driving `shaft, al chain of elements betweenthe driving shaft and 4one of said jaws adapteldnormallyfto swing such jaw toward and vfrom the other jaw, and means independent of the driving shaft to toy permit the actuate one of said elements n removal 'of another element, thereby destroying thenormally operative driving connection to the lswiiigmgjawand allowing it to beretracted an abnormal distance from the other jaw.`

7. In; a rock Crusher, the combination `with the two jaws, of an oscillating tumbler and means to actuate the saine, a removable operative connection between the tnmbler and one of!4 the jaws, normally inoperative means to hold thejaws indefinite relation, and means to impart to thetumbler a movement of retraction independent of its normal oscillating movement, thereby permitting the removal of the operativeconnection between the tumbler and its actutedjaw and allowing said jaw, after saidholding means is rendered inoperative, to drop away from the other jaw. j

8. In a rock Crusher, the combination with .the fixed jawlandr the movable'jaw, of a ,tn mblerfand means'to ,oscillte the sme,

a movable toggle betweenthe tumblerand the movable jaw, a` detachable device adaptedmtoglioldy the twoV jaws indefinite relation, andfmea'nsto impart to the tiimbler a movement vof rretraction independent" of ilo its normal oscillating movement, thereby,.

after said detachable connection is applied, permitting the detachment of the toggle by said retraction of the tumbler' and then, after said detachable connection is removed, permitting the swinging of the movable jaw away from the fixed j aw.

9. ln a rock Crusher, the combination with the two jaws, oi' a tumbler, a normally stationary eccentric on which the tumbler swings, means to oscillate the tumbler, a removable toggle between the tumbler and the movable jaw, means to hold one jaw from swinging away from the other jaw, and means to turn the eccentric, thereby retracting the pivoted end of the tumbler, detacliing the toggle and allowing one aw to swing away from the other jaw after the removal of said holding means.

l0. in a rock crusher, the combination with the iiXed jaw and the movable jaw, of an oscillating tumbler and means to actuate the same, a removable toggle between the tumbler and the movable jaw, a hooked 'rod adapted to be applied to the two jaws to hold them in fixed relation, and means to impart to the tumbler a movement of retraction independent ot its normal oscil lating movement, thereby, after said removable rod is applied, permitting the dei tachment ot the toggle, and after said removable rod is removed permitting the automatic separation of the 4 ll. ln a rock crusher, the combination with the fixed jaw and the movable jaw, of a tumbler, a normally stationary eccentric on which the tumbler swings, means to oscillate the tumbler, a toggle loosely connecting the tumbler and movable jaw and held in place by the weight of the latter,

a detachable hooked rod adapted to be applied to the jaws to hold them in fixed relation, and means to turn the eccentric.

ln testimony of which invention, I have hereunto set my hand, at Philada. Penna., on this 6th day oi April, 1916.

WILLIAM T. RUTH.

Uopies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington. 2D. C. 

